Категории продукта
Hong Kong Yidefan Electromechanical Co., Ltd., основанная в Гонконге, Китай, в 2021 году, является компанией, специализирующейся на производстве автоматического оборудования, С момента основания компании edefan Electromechanical стремится создавать электромеханическое оборудование самого высокого качества для клиентов, играя вспомогательную роль в области автоматизации, придерживаясь основных ценностей «трудолюбие, прагматизм, обучение и настойчивость», начиная от тщательного выделение охлаждающих вентиляторов на большие усилия в области авиации.В настоящее время компания оперирует более чем 1000 наименований продукции, осуществляя трансформацию от небольшого оборудования к крупному оборудованию.С момента своего основания компания получила 102 вида промышленных нужд и была признана крупными промышленными предприятиями «отличным поставщиком Китая».выиграл "почетную награду за качество экспорта машинного оборудования Гонконга".Различные награды за качество и квалификации Сфера деятельности yidefan electromechanical включает в себя общие позиции: продажа силовых электронных компонентов; розничная торговля автозапчастями; продажа медицинских изделий I класса; продажа специального оборудования для полупроводниковых приборов; продажа механического оборудования; продажа строительных материалов; новые материалы; продажа электрооборудования; продажа интеллектуального оборудования для передачи, распределения и управления электроэнергией; продажа коммуникационного оборудования; продажа оборудования управления распределительными выключателями; продажа электронных компонентов и электромеханических компонентов и оборудования; продажа механического и электрического оборудования; продажа холодильного оборудования и тягачей на новой энергии; продажа оборудования для разделения и очистки газа и жидкости; исследования и разработки бытовой техники; продажа электрического нагревательного оборудования для пищевой промышленности; (за исключением пунктов, которые должны быть утверждены в соответствии с законом, вести предпринимательскую деятельность самостоятельно в соответствии с законом с лицензией на ведение бизнеса) в будущее: yidefan electromechanical Co., ltd.всегда будет выполнять промышленную миссию и унаследовать силу науки и технологий.на пути индустриализации построить прочный мост для решения проблем крупных предприятий
новые продукты
Гонконг yidefan распространяет различные пропагандистские компании по производству электрических и механических устройств, приглашаем вас проконсультироваться в любое время и предоставить вам удовлетворительные решения и льготные цены. телефон: + 86-13806028623 whatsapp: + 86-13806028623 wechat: + 86-13806028623
избранные производители
  • AB SoftLogix 5800 Введение
  • Учебное пособие по настройке среды эмуляции протокола SoftLogix 5800 SoftPLC CIP/EtherNet/IP
  • Сигнал провода вентилятора
  • ebm-papst
  • вентилятор nmb
  • Саньо Денки
  • Fanuc вентилятор
  • омрон вентилятор
  • адда вентилятор
  • Sunon Fan
Последние новости
How to apply PLC in power distribution system
Jan. 17, 2023
How to apply PLC in power distribution system
1、 With the development of social economy and the rapid rise of industry, some 10KV power distribution systems have increased significantly. The simplicity, reliability, safety, energy conservation and cost performance of power distribution systems are particularly important. At present, the traditional 10KV power distribution system still adopts relay system, distributed monitoring and metering, and distributed control mode, while the centralized control and centralized monitoring and metering mode of PLC (programmable logic controller) system is conducive to improving the operation management automation level of the power distribution system, ensuring the safety and stability of power distribution, and also reducing the work intensity of the operators, which is safe and reliable. 2. Comparison between relay system and PLC system PLC (programmable logic controller) is a new type of industrial controller developed in recent decades. Because of its flexible programming, complete functions, wide application, it is simpler than the control of relay system, easy to use, strong anti-interference, high performance-price ratio, and high working life. Its own body has the characteristics of small size, light weight, and low power consumption. The relay system has obvious disadvantages: large volume, low reliability, short working life, and difficult to find faults, especially because it is composed of hardwired logic, so the wiring is complex, and the adaptability to changes in production process is poor, and it is inconvenient to realize centralized control; The installation and field wiring of PLC is simple, and its internal soft relay can be used to simplify the complicated intermediate links of the relay system, realize the soft wiring logic to form the system, and facilitate centralized control. In addition, PLC also has self-diagnosis, fault alarm, fault alarm type display and network communication functions, which is convenient for inspection by operators and maintenance personnel. 3. Application examples of centralized control, centralized monitoring and metering in 10KV power distribution primary system In a 10KV power distribution primary system, there are two 1000KVA transformers operating in parallel. In the power distribution primary system, the relay system is mainly concentrated in the main receiving cabinet and the transformer distribution cabinet. The application of PLC system to replace the relay system can reduce the hard wiring between cabinets, save many relays, simplify the process, reduce the production cost of the system, and improve the reliability, safety and energy saving of the power distribution system. PLC is the nerve center of the whole system. All control, protection and working status indication are completed through the virtual relay inside the PLC through the soft wire and the external given switch value and signal. If the control voltage is below the safe voltage, it can improve the safety of the work, and operate far...
Посмотреть больше
  • January 16 2023
    Precautions for output circuit design in PLC control system
    1、 Output mode selection (1) Relay output: the advantage is that different AC and DC loads can be carried between different common points, and the voltage can also be different, and the load current can reach 2A/point; However, the relay output mode is not applicable to high-frequency action load, which is determined by the life of the relay. (2) Thyristor output: with load capacity of 0.2A/point, only with AC load, can adapt to high-frequency action, and the response time is 1ms. (3) Transistor output: The biggest advantage is that it is suitable for high-frequency action, with short response time, generally about 0.2ms, but it can only carry DC5-30V load, the maximum output load current is 0.5A/point, but every 4 points should not be greater than 0.8A. When the output frequency of your system is less than 6 times per minute, relay output should be preferred because of its simple circuit design, strong anti-interference and load capacity. When the frequency is less than 10 times/min, both relay output mode and PLC output can be used to drive Darlington triode (5-10A), and then drive the load. 2、 Anti-interference and external interlocking When the PLC output is loaded with inductive load, when the load is powered off, it will cause a surge current impact on the PLC output. Therefore, the DC inductive load should be next to it and connected with a continuous current diode, and the AC inductive load should be connected with a surge absorption circuit, which can effectively protect the PLC. When the outputs of two physical quantities have been interlocked with software inside the PLC, they should also be interlocked outside the PLC to enhance the reliability of the system. 3、 Selection of COM points The number of "COM" points is different for different PLC products. Some "COM" points have 8 output points, some have 4 output points, and some have 2 or 1 output point. When there are many kinds of loads and the current is large, PLC products with one "COM" point and 1-2 output points shall be adopted; When the number of loads is large and the type is small, a "COM" point is used.
    Precautions for output circuit design in PLC control system
  • January 13 2023
    Troubleshooting of PLC common faults
    1. Is PWR light on? If it is not on, check the power supply voltage at the voltage input terminal (98-162VAC or 195-252VAC) of the frame with AC power supply; For the frame requiring DC voltage, measure the DC voltage between+24VDC and 0VDC terminals. If it is not a suitable AC or DC power supply, the problem occurs outside the SR PLC. If the AC or DC power supply voltage is normal, but the PWR light is not on, check the fuse, and replace the CPU frame if necessary. 2. Is PWR light on? If it is on, check and display the error code, and make corresponding correction according to the code definition in the error code table. 3. Is the RUN light on? If it does not light up, check whether the programmer is in the PRG or LOAD position, or whether there is a program error. If the RUN light is not on and the programmer is not plugged in, or the programmer is in RUN mode and no error code is displayed, the CPU module needs to be replaced. 4. Is the BATT light on? If it is on, replace the lithium battery. Because BATT light is only an alarm signal, even if the battery voltage is too low, the program may not change. After replacing the battery, check the program or let the PLC test run. If the program has errors, reload the program recorded on the tape into the PLC after completing the system programming initialization. 5. In a multi-frame system, if the CPU is working, the RUN ` relay can be used to check the operation of other power supplies. If the RUN relay is not closed (high resistance state), check the AC or DC power supply according to the first step above. If the AC or DC power supply is normal and the relay is disconnected, replace the frame. General troubleshooting steps Other steps are related to the user's logical knowledge. The following steps are actually more common, and have not been modified or adjusted for the specific application problems you encounter. The best tool for finding faults is your feeling and experience. First, plug in the programmer and turn the switch to the RUN position, then follow the steps below. 1. If the PLC stops at the place where some outputs are excited, usually in the middle state, then look for the signals that cause the next operation (input, timer, line switch, drum controller, etc.). The programmer will display the ON/OFF status of that signal. 2. If the status displayed by the programmer is not consistent with the LED indication of the input module, replace the input module. If there are multiple modules to be replaced on the expansion frame, you should check the I/O expansion cable and its connection before replacing the module. 3. If the input status is consistent with the LED indication of the input module, compare the status of the LED and the input device (button, limit switch, etc.). The two are different. Measure the input module. If there is any problem, replace the I/O device, field wiring or power supply; Otherwise, replace the input module. 4. If the signal is a line stream and there is no output...
    Troubleshooting of PLC common faults
  • January 12 2023
    What are the rules of PID adjustment setting
    PID is based on P. P is the amplification factor of negative feedback control. Negative feedback control is an amplifier. The output of the amplifier is compared with the input set value after entering through the feedback circuit. Because it is negative feedback, it is a difference. Using this difference to control the change of output, PID solves some problems that are difficult to solve with negative feedback. For example, if the P amplification of negative feedback control is too large, it will overshoot and oscillate. Another problem is that the signal direction of the negative feedback value and the set signal value is opposite. If the difference between the set value and the negative feedback value is equal to zero, it will oscillate violently after amplification. PID is the improvement of negative feedback. Use the integral to get closer to the set value, but there is a premise that your P should do the same, and the proportional coefficient P should be appropriate. When the output oscillates in a limited range, P is OK. Then I will be added, and I will definitely reduce the oscillation. The oscillation will become smaller and smaller, and finally become stable. The smaller I is, the greater its control intensity is, so I gradually increases from large to small. P is the greater the control intensity. It doesn't matter whether the general control D is added or not. When to add D, the reaction is very intense when it is slowly adjusted when it is started, and then it swings down when it rises suddenly. If it rises too fast, it needs to add D, which can restrain it from rising at once. In another case, there is still oscillation when P and I are added. At this time, it can add D appropriately.
    What are the rules of PID adjustment setting

оставьте сообщение

оставьте сообщение
Если вы заинтересованы в наших продуктах и ​​хотите узнать более подробную информацию, оставьте сообщение здесь, мы ответим вам, как только сможем.

Дом

Продукты

skype

whatsapp